sqlstr :='SELECT * FROM emp WHERE empno IN ('||v_empno||')'; OPENp_rcFORsqlstr; ENDGet_empinfo; ENDpkg_emp; / SQL> var v_rc refcursor; SQL>execpkg_emp.Get_empinfo('7902,7788',:v_rc); SQL> print v_rc; 3.create or replace procedure procStr(inString in varchar2) as sys_refcursor resultcur ; begin open resultc...
sqlstr :='SELECT * FROM emp WHERE empno IN ('||v_empno||')'; OPENp_rcFORsqlstr; ENDGet_empinfo; ENDpkg_emp; / SQL> var v_rc refcursor; SQL>execpkg_emp.Get_empinfo('7902,7788',:v_rc); SQL> print v_rc; 3.create or replace procedure procStr(inString in varchar2) as sys...
select ltrim(max(sys_connect_by_path(lastname, ',')),',') from (select lastname, rownum tfrom hrmresource where id in(waigaunyanshourens)connect by prior t = t - 1start with t = 1; 此种方法比较简洁;不要要游标;直接就可以接收多个结果集,并且将结果集自动拼接成用逗号隔开的字符串; ...
resumable--enable or disable resumableforcurrentsession(DefaultFALSE)resumable_name--text string to help identify resumable statement resumable_timeout--waittime(inseconds)forRESUMABLE(Default7200)date_cache--size(inentries)ofdate conversioncache(Default1000)no_index_errors--abort load on any indexerrors...
方法二:SQL实现方法之一般函数写法 相比较第一种正则函数的方法,普通的sql函数比较通用化,各个版本都支持。但写法稍复杂 select substr(inlst, instr(inlst, ',', 1, rownum) +1, instr(inlst, ',', 1, rownum +1) - instr(inlst, ',', 1, rownum) -1) from (select ',' || '1,25,3,fte...
Oracle的sql基本语法--查询 (1)DISTINCT语法结构 --SELECTDISTINCT列1,列2,列3...from 表名;select distinct stuaddress,grade from jalen.stuinfo;select distinct job from scott.emp; 1. 2. 3. ##(2)where的 =、IN、LIKE、BETWEEN...AND、AND、OR、NOT ...
1、先创建一个简单的数据表。2、插入数据，顺便复习插入数据了，最好多插几个，查询的时候更明显。3、select后面的字段是等下查询结果所显示的，where就是限制的条件，根据where查询到对应的列。4、如果字段里面有数字的话也是可以根据数字大小进行查询的。5、加入and语句可以同时限制两个条件来查询。6...
1.name的唯一性较差:('name1','name2','name3','name4','name5')条件访问的数据占全表数据的百分比很大，索引访问的总成本大于全表扫描的成本。这时优化器就会选择全表扫描，也就是说不会使index了。2.name的唯一性较强 ('name1','name2','name3','name4','name5')条件访问的数据占全...
String sql[] = new String[inArrayNum];// 分割的sql片段数组,如:select * from // table1 where ID in // (1,2,3,4,...,1000),整条sql把sql片段用union // all连起来 for (int k = 0; k < paramArray.length; k++) { if (b < inArrayNum) { ...
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